Moog Servo Valve Electric Hydraulic Servo Valve with 3000 rpm Maximum Speed 315

Product Specification

D633Z480B D633Z506B
D633Z528B D633Z529B
D633Z532B D633Z539B
D633Z557B D633Z570B
D633Z585B D633Z586B Electric hydraulic servo valve MOOG imported hydraulic valve from Germany

FAQ:

 What are the main advantages of MOOG Servo Valves?

MOOG servo valves are known for several key advantages :

• High-Precision Control: They offer exceptional control accuracy, which can reach about 0.1%, suitable for demanding applications.

• High Dynamic Performance: They feature fast response times, often in the millisecond range, allowing for high-speed and high-precision control.

• High Reliability and Stability: Designed with advanced technology and materials for stable long-term operation, even in harsh environments.

• Variety of Designs: Available in various series, including standard two-stage, high-performance two-stage and three-stage, and direct-drive valves (DDV) to meet different performance needs.

• Fail-Safe Functionality: Some models include a fail-safe feature that moves the valve to a safe position in case of a power failure or system fault .

Series and Specifications

3. What are the main series of MOOG Servo Valves?

MOOG offers a comprehensive range of servo valves. Some prominent series include :

• G761 Series: A popular two-stage flow control valve with mechanical feedback. Known for fast response and robustness, it is widely used in various industrial applications .

• D630 Series (e.g., D634, D636, D637): These often feature direct drive by a linear force motor (DDV) or advanced control. The D636/D637 series, for example, comes with a fieldbus interface and integrated digital electronics for high flexibility .

• D660, D661, D662 Series: Classic two-stage servo valves with a wide range of industrial uses .

• 72 Series: Standard response two-stage valves with a field-replaceable pilot valve filter and the option for external pilot pressure control .

The table below summarizes the key features of some common series:

Series Example    Key Characteristics    Typical Applications / Features
G761-3003B     Two-stage, mechanical feedback, high response    Industrial machinery (e.g., metal forming presses)
D634-341C     Pilot-operated, closed-loop spool control with LVDT    Precision control systems
D636/D637     Direct Drive (DDV), linear force motor, fieldbus interface    No pilot leakage, high dynamics, programmable
72 Series     Standard response, replaceable pilot filter    Power generation (steam/gas turbines)

4. What are the typical operating parameters for MOOG Servo Valves?

While specifications vary by model, general operating parameters can include :

• Maximum Operating Pressure: Up to 4000-4500 psi (approx. 31.5 MPa) for many models.

• Flow Control Range: From a few liters/minute (e.g., 3.8 L/min) to very high flows (e.g., 3800 L/min), depending on the valve size and type .

• Input Signal: Typically a current signal (e.g., ±40 mA) or a voltage signal. Modern valves may accept digital fieldbus commands .

• Coil Resistance: Typically, each coil in the torque motor has a specific resistance, for example, in the range of 72-88 Ω .

• Operating Temperature: A common range is -20°C to 80°C .

Applications, Troubleshooting, and Maintenance

5. Where are MOOG Servo Valves commonly used?

MOOG servo valves are used in a wide array of industries that require precise motion control :

• Industrial Machinery: Metal forming equipment (press brakes, shears, injection molding machines), wood presses, and plastic machinery.

• Power Generation: Control of steam turbine valves, gas turbine fuel systems, and guide vane control.

• Test and Simulation: Automotive and aerospace test rigs, flight simulators.

• Other Fields: Robotics, material handling, and other applications demanding high-performance hydraulic control.